Domestic heating furnace



Sept; 8,1925. 1,553,260

H. W. NEAL DOMESTIC HEATING FURNACE Filed-July 31, 1922 3Sheets-Sheet 1se ts, 192s. 15532260 H. W. NEAL DOMESTl iC HEATING FURNACE 3Sheets-Sheet g Filed July 31 1922 ATfoeN-y.

Sept. 8, 1925. 1,553,260 H. w. NEAL DOMESTIC HEATING FURNAGE Filed July51 1922 3 Sheets-Sheet 3 Patented Sept. 8, 1925.

UNITED. s Ares PATENT. OFFICE;

HARRY W. NEAL, or 'rnnmimronis, INDIANA, ASSIGNQB TO HALL-NEAL FURNACEooMrANY, on INDIANAPOLIS momma, A coaroaarron or INDIANA.

' DOMESTIC HEATING rURNAcE.

, Application filed July 31, 1922, Serial 110,578,671, I

To all whom it may concern:

- Be it known that'I, HARRY-w. Nae,

citizen of the United States, residing at Indianapolis, in the county ofMarion and State of Indiana, have invented certain new and usefulImprovements in Domestic Heating Furnaces, of Which the following is aspecification. v i r This invention relates'to a method .oflconstructingand manufacturing'hotair-fur naces for domestic heating purposes.

One of the objects of the invention consists in the provision of amethod whereby hot. air furnaces fabricated andmanufacing capacity isgreatly increased, 'and'the cost of construction materially reduced.

I accomplish the above objects of themvention, and such others as mayappear from a perusal of the following description and claims relatingto such method of fabricating and constructing, as exemplified in apreferred composite structure shown in accompanying drawings, whichform'a' part of this application, in which,

Figure 1 is a'partial side elevation and a partial longitudinalsectional view of a domestic heating furnace constructed in accordancewith my improved method. Fig. 2 is a top or plan view of the furnace,the outer casing being cut away on the plane 2-2 in Fig. 1.

' detail vertical section of the forward portion of the furnace, inwhich the outer casing is omitted. Fig. 4 is atransverse View lookingtowards the front end ofthe furnace, on the plane l-4 in Fig. 3. Fig. 5'is a horizontal sectional view of the furnace, on the plane 55 inFig. 1. Fig. 6 is a. fragmentary detail sectional view, on an enlargedscale, showing more clearly the joint for securing the division wallwith the furnace walls. Fig. 7 is a fragmentary detail view in sideelevation of the rear portion of the furnace. Fig. 8 is a transversesectional view looking towards the rear end of the Fig. 3 is afragmentary of the furnace. said described assembled furnace sectlons isouter casing-in this figure being omitted. Fig. 9 is an elevation of therear end of the furnace. Fig. lOis a perspective-view of a pair ofcrimped members which conjointly furnace, on the plane's- 8 in Fig. 1,the

form one of the integral sections of the unitary furnace structure.-

pears when out from the-raw stock.

Referring to the drawings, I have illus-- trated a composite heatingfurnace structure fabrlcated and 1 constructed 1n accordance with myimproved method, which consists in stamping or cutting from the rawmaterial stock a number of individual blanks 15, as illustrated in Fig.11, which may at'the same operation, or subsequent thereto, be bentalong the dotted line 16, 17 18, 19 and 20 into an angularmember 25 asillustrated.

in Fig. 10. It will be observed that all the members 25 are bent a likemanner to D Fig. 11 is a. plan "Vl6W of a furnace-member blank as itapipromote uniformity in contour, and there-.'

by require buta single cutting die. These members 25 may then-bearranged in pairs and 1n reverse pos1t1ons, as shown in Fig. 10.

and when properly united each pair of members forms a section ofthefurnace. \Vhen two of the' members25 are placed in a reversed ordertheirmeeting edges are brought together, alined, and then welded togetheralongthe dotted lines AB 'in Figs. 4 and 8 J to form integral'sectionsof the subsequently unitary furnace structure. Each off'the' furnacesections, composed of twoof the united.

members 25, has the si'de -edges bent outwardly into the right angleflanges 25* which not only provide large bearing surfaces for theattachment of the succeeding sections,

but in addition increase the heat radiating surface area of the furnace,and, furthermore, the flanges serve the purpose of accelerating theaction of extraction ofheat from the members 25 constituting the wallsThe number of the aforewith theflat faces of the flanges 25 abutting oneanother, as shown in Fig. 5, each pair of contacting flanges is securelywelded together to form the unitary integral furnace structure. The openremaining ends of the unitary furnace structure are closed by 1 to theaction of expansion and contraction,-

means of the end-members 1 and 31, each of these members being Welded tothe broad face of the adjacentsection 25. The front end member isprovided Withthe usual 48 fuel opening 33 and the ash-pit opening 34,"and the rear end member 31 is provided with the usual smoke outletopenings 35 and 36;

and a clean-out opening 3?} In constructing the end members 30 and 31, Iintroduce the novel arrangement which consists in forming those memberson arcs in crosssecflion so that these members will more easily -respondthereby correspondingly reducing the liability of such actionaffectingthe welded joints formed between the end members and the grooves orchannels 41 which areof such width as to conveniently receive themarginal edge-portion:ofdivision wall l0, Division wall 40,- similarly:to the endrmembers 30 and 31, is benton an are so thatk it may readilyrespond to the actionyof expansion and contraction of the a unitary.furnace structure. Division. vvald is. provided." with the smokeopening-43 thronghwhich the smoke passes from the combustion chamber 44from which the smoke may pass directly into the outletpipe v4L5, or'itma be deflected into chamberto :back of division Wall 40 and effectanescape through opening the vertical piped? and back to the pipe 45,depending upon the position occupied by damper \Viththe-precedingdisclosure of one of thevpreferred embodiments of the inventionconstructed in accordance with my improved method as a guide it will beeasy for those skilled in this art to design other forms of unitaryfurnace strnctures to meetparticular requirements of usee-which willpresent all m of the -functional and result attaining characteristicsand advantages of my improved method.

l e m: a.

1. A furn ace body comprising a plurality of duplicate endless sectionseach" section having parallel flanges at oppositersides welded'tocontacting flangesof adjacent sections said flangesincluding a pair ofstepped flanges and; a baflie plate of greater diameten than the 5 innerdiameter of the furnace lsaid ba-fileplate having its outer edgesextending between the, stepped flanges, substantially as set forth, V kp z 2. A furnace body structure comprising a plurality of duplicateendless sections each sectionconsisting of a pair of identical memberseach member having flanges extending at right angles to the main portionthereof said membersalso having their ends extending-inward to ,prov ideupper" and lower *WallS. s aid pair-i ofgmembers in eachsection beingoppositely-arranged and welded together at the meeting edges. of thesaid upper and lower,,walls and adjacentSQctions having their contactingflanges Welded together, substantially as setforthl I y In witnesswhereof, Ihavehereuntoset my hand and seal ateIndianapolis, Indiana,this ZQthday, of July A." 1)., one thousand nine hundred and twenty-two.

HARRY W. neat. [n 8.

